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https://issues.apache.org/jira/browse/HBASE-24749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17162033#comment-17162033
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Duo Zhang commented on HBASE-24749:
-----------------------------------
What I agree with [~busbey] is that, let's use a new family for meta to store
the storefiles, do not introduce new system tables on the critical path of
recovery.
And we should provide new HBCK tools to sync the file system with the
storefiles family, or rebuild the storefiles family from the filesystem?
But it is still a pain that we could see a HFile on the filesystem but we do
not know whether it is valid... Check for trailer?
> Direct insert HFiles and Persist in-memory HFile tracking
> ---------------------------------------------------------
>
> Key: HBASE-24749
> URL: https://issues.apache.org/jira/browse/HBASE-24749
> Project: HBase
> Issue Type: Umbrella
> Components: Compaction, HFile
> Affects Versions: 3.0.0-alpha-1
> Reporter: Tak-Lon (Stephen) Wu
> Priority: Major
> Labels: design, discussion, objectstore, storeFile, storeengine
> Attachments: 1B100m-25m25m-performance.pdf, Apache HBase - Direct
> insert HFiles and Persist in-memory HFile tracking.pdf
>
>
> We propose a new feature (a new store engine) to remove the {{.tmp}}
> directory used in the commit stage for common HFile operations such as flush
> and compaction to improve the write throughput and latency on object stores.
> Specifically for S3 filesystems, this will also mitigate read-after-write
> inconsistencies caused by immediate HFiles validation after moving the
> HFile(s) to data directory.
> Please see attached for this proposal and the initial result captured with
> 25m (25m operations) and 1B (100m operations) YCSB workload A LOAD and RUN,
> and workload C RUN result.
> The goal of this JIRA is to discuss with the community if the proposed
> improvement on the object stores use case makes senses and if we miss
> anything should be included.
> Improvement Highlights
> 1. Lower write latency, especially the p99+
> 2. Higher write throughput on flush and compaction
> 3. Lower MTTR on region (re)open or assignment
> 4. Remove consistent check dependencies (e.g. DynamoDB) supported by file
> system imple
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